Knurled Nut High Profile — Metric Sizes
What Are Knurled Nut High Profile?
Knurled nut high profile fasteners are cylindrical threaded nuts with a knurled (textured) outer surface and a tall body height. The raised diamond or straight knurl pattern provides a reliable grip surface for finger-tightening, eliminating the need for a wrench in low-torque applications. The high-profile body offers greater contact area and enhanced resistance to loosening compared to standard knurled nuts, making them preferred in precision instruments, electronics enclosures, and optical equipment.
Key Features and Benefits
- High-Profile Body: Taller height provides more gripping surface and improved torque resistance over standard-height knurled nuts.
- Knurled Outer Surface: Diamond or straight knurl pattern enables secure hand-tightening without tools in frequent-adjustment assemblies.
- Metric Threading: Precise metric coarse thread ensures consistent engagement and easy compatibility with standard metric fasteners.
- Versatile Materials: Available in stainless steel and brass for corrosion resistance or aesthetic requirements.
- Wide Application Range: Suitable for electronics panels, optical benches, jigs, fixtures, and any assembly requiring tool-free adjustability.
Materials and Finishes
- Stainless Steel (A2): Corrosion-resistant for humid, marine, or chemically exposed environments.
- Brass: Excellent for electrical and decorative applications requiring non-magnetic properties.
- Mild Steel (Zinc Plated): Cost-effective solution for indoor or protected assemblies.
Standards Compliance
- DIN 466 — Knurled nuts, high form
- ISO 4033 — Metric hexagon high nuts (equivalent profile)
Size Range and Availability
Available in M3 through M16.
Frequently Asked Questions (FAQs)
1. What is a knurled nut high profile used for?
They are used in assemblies that require frequent manual adjustment without tools — such as electronics panels, laboratory instruments, optical equipment, and machine jigs.
2. What is the difference between high profile and low profile knurled nuts?
High profile knurled nuts have a taller body, providing more gripping surface and higher torque resistance. Low profile variants are shorter, suited for tight spaces where height is restricted.
3. Can knurled nut high profile fasteners be tightened with a wrench?
Yes. While designed for hand-tightening, the cylindrical body can be gripped with pliers or a strap wrench if additional torque is required.
4. What materials are available for high profile knurled nuts?
We stock stainless steel (A2), brass, and zinc-plated mild steel variants to suit different environmental and application requirements.
5. Are knurled nut high profile fasteners suitable for outdoor use?
Stainless steel A2 variants are recommended for outdoor or humid environments. Zinc-plated steel offers only mild corrosion resistance and is best for indoor use.
6. What thread type do your knurled nuts use?
Our knurled nuts feature metric coarse thread for consistent engagement with standard metric fasteners.
7. What size range is available?
We stock M3 through M16 in high profile knurled nuts. Contact us for custom sizes or bulk requirements.
8. Can these nuts be used in aluminium assemblies?
Yes. Use stainless steel variants with aluminium components to prevent galvanic corrosion.
9. What is the DIN standard for knurled nut high profile?
Knurled nut high profile fasteners conform to DIN 466, which specifies dimensions, tolerances, and material requirements.
10. Do you offer custom lengths or thread pitches?
Contact us for custom requirements beyond our standard stock range.
